/*
 * FindBugs - Find Bugs in Java programs
 * Copyright (C) 2005, University of Maryland
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package edu.umd.cs.findbugs;

import java.io.IOException;
import java.util.Date;

import edu.umd.cs.findbugs.xml.XMLAttributeList;
import edu.umd.cs.findbugs.xml.XMLOutput;
import edu.umd.cs.findbugs.xml.XMLWriteable;

/**
 * A version of an analyzed application.
 * Application versions are uniquely identified by a sequence number,
 * which represents a run of FindBugs on the application.
 * Timestamp is when FindBugs was run (according to System.currentTimeMillis()),
 * and the release name is available if the user provided it.
 * 
 * @author David Hovemeyer
 */
public class AppVersion implements XMLWriteable, Cloneable {
	/**
	 * XML element name for a stored AppVersion object.
	 */
	public static final String ELEMENT_NAME = "AppVersion";

	private long sequence;
	private long timestamp;
	private String releaseName;
	private int numClasses;
	private int codeSize;

	public AppVersion(long sequence, long time, String name) {
		this.sequence = sequence;
		this.timestamp = time;
		this.releaseName = name;
	}
	public AppVersion(long sequence, Date time, String name) {
		this.sequence = sequence;
		this.timestamp = time.getTime();
		this.releaseName = name;
	}
	public AppVersion(long sequence) {
		this.sequence = sequence;
		this.timestamp = System.currentTimeMillis();
		this.releaseName = "";
	}

	/* (non-Javadoc)
	 * @see java.lang.Object#clone()
	 */

	@Override
	public Object clone() {
		try {
			return super.clone();
		} catch (CloneNotSupportedException e) {
			throw new AssertionError(e);
		}
	}

	/**
	 * @return Returns the sequence.
	 */
	public long getSequenceNumber() {
		return sequence;
	}

	/**
	 * @return Returns the timestamp.
	 */
	public long getTimestamp() {
		if (timestamp <= 0)
			return System.currentTimeMillis();
		return timestamp;
	}

	/**
	 * @return Returns the releaseName.
	 */
	public String getReleaseName() {
		return releaseName;
	}

	/**
	 * @param timestamp The timestamp to set.
	 */
	public AppVersion setTimestamp(long timestamp) {
		this.timestamp = timestamp;
		return this;
	}

	/**
	 * @param releaseName The releaseName to set.
	 */
	public AppVersion setReleaseName(String releaseName) {
		this.releaseName = releaseName;
		return this;
	}

	/* (non-Javadoc)
	 * @see edu.umd.cs.findbugs.xml.XMLWriteable#writeXML(edu.umd.cs.findbugs.xml.XMLOutput)
	 */
	public void writeXML(XMLOutput xmlOutput) throws IOException {
		xmlOutput.openCloseTag(ELEMENT_NAME, new XMLAttributeList()
				.addAttribute("sequence", String.valueOf(sequence))
				.addAttribute("timestamp", String.valueOf(timestamp))
				.addAttribute("release", releaseName)
				.addAttribute("codeSize", String.valueOf(codeSize))
				.addAttribute("numClasses", String.valueOf(numClasses)));
	}

	/* (non-Javadoc)
	 * @see java.lang.Object#toString()
	 */

	@Override
	public String toString() {
		StringBuilder buf = new StringBuilder();
		buf.append(String.valueOf(sequence));
		buf.append(',');
		buf.append(String.valueOf(timestamp));
		buf.append(',');
		buf.append(releaseName);
		buf.append(',');
		buf.append(codeSize);
		buf.append(',');
		buf.append(codeSize);
		return buf.toString();
	}
	/**
	 * @param numClasses The numClasses to set.
	 */
	public AppVersion setNumClasses(int numClasses) {
		this.numClasses = numClasses;
		return this;
	}
	/**
	 * @return Returns the numClasses.
	 */
	public int getNumClasses() {
		return numClasses;
	}
	/**
	 * @param codeSize The codeSize to set.
	 */
	public AppVersion setCodeSize(int codeSize) {
		this.codeSize = codeSize;
		return this;
	}
	/**
	 * @return Returns the codeSize.
	 */
	public int getCodeSize() {
		return codeSize;
	}
}
